CN202406013U - Braking unit of wind power generation converter - Google Patents
Braking unit of wind power generation converter Download PDFInfo
- Publication number
- CN202406013U CN202406013U CN 201120487722 CN201120487722U CN202406013U CN 202406013 U CN202406013 U CN 202406013U CN 201120487722 CN201120487722 CN 201120487722 CN 201120487722 U CN201120487722 U CN 201120487722U CN 202406013 U CN202406013 U CN 202406013U
- Authority
- CN
- China
- Prior art keywords
- power generation
- wind power
- igbt
- braking unit
- wind
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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- Wind Motors (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The utility model relates to a functional unit of a wind power generation system, in particular to a braking unit of a wind power generation converter, which works in the low voltage ride-through process of the wind power generation system. The braking unit of the wind power generation converter comprises a resistance loop which is connected to the side of a direct current bus of the wind power generation converter, wherein the resistance loop is connected with a pair of insulated gate bipolar transistors (IGBTs) which is connected in parallel and is used for controlling on/off of the resistance loop. As the mode that the IGBTs of the braking unit can be two parallel low-capacity IGBTs of the same model can be implemented easily, both the loss of the IGBTs and the cost of the braking unit are reduced.
Description
Technical field
The utility model relates to the functional unit of wind generator system, specifically is the wind-force generating converter brake unit that a kind of wind generator system moves in the low pressure crossing process.
Background technology
For the grid type wind turbine generator, when instantaneous the falling of line voltage generation, the wind-powered electricity generation unit that electric power system requires to be incorporated into the power networks must keep being incorporated into the power networks to the stipulated time, rather than protection is shut down immediately, and this is that low pressure is passed through.For realization low pressure is passed through, need braking circuit be installed in the dc bus side of current transformer, in order to absorb the energy that to see off during low pressure is passed through.The brake unit that common direct-driving type wind electric converter adopts is shown in A part among Fig. 1; It includes the resistance loop of the dc bus side that is connected current transformer; When brake unit need drop into, switch T was closed, and portion of energy will consume with the heat energy form on resistance; Switch T breaks off, and then brake unit is out of service; For guaranteeing the rapidity of response, switch T adopts IGBT to realize usually.The specification requirement of passing through according to the power system capacity and the low pressure of direct-driving type unit; IGBT must select the device of larger capacity; Conventional design is directly carried out type selecting and design to IGBT with this principle; Though function is achieved, high pressure, the big capacity IGBT driver cost supporting with it is higher, and the loss when moving of single switch device is also relatively large.
Summary of the invention
The utility model technical problem to be solved is, providing a kind of can move in wind generator system low-voltage crossing process, and cost low, be easy to realize, reliability is high, running wastage is low wind-force generating converter brake unit.
The wind-force generating converter brake unit of the utility model includes the resistance loop that is connected wind-force generating converter dc bus side, is connected with a pair of IGBT parallel with one another that is used for the switching of controlling resistance loop on the resistance loop.
The drive system of said IGBT includes a dsp controller that can generate the IGBT drive signal, and dsp controller is connected with drive circuit with optical fiber through photoelectric conversion module, and drive circuit is controlled two IGBT respectively through two gate pole circuit.
The utility model can be designed to the low capacity IGBT parallel connection of two same models with the IGBT of brake unit part, and this mode is easy to realize, has both reduced the loss of IGBT, has reduced cost again.
Description of drawings
Fig. 1 is the circuit theory diagrams of existing wind electric converter brake unit;
Fig. 2 is the circuit theory diagrams of the utility model.
Embodiment
As shown in Figure 2, this wind-force generating converter brake unit includes the resistance loop 1 that is connected wind-force generating converter dc bus side, is connected with a pair of IGBT parallel with one another that is used for the switching of controlling resistance loop on the resistance loop.
The drive system of said IGBT includes a dsp controller that can generate the IGBT drive signal, and dsp controller is connected with drive circuit with optical fiber through photoelectric conversion module, and drive circuit is controlled two IGBT respectively through two gate pole circuit M.
Claims (2)
1. a wind-force generating converter brake unit includes the resistance loop that is connected wind-force generating converter dc bus side, it is characterized in that: be connected with a pair of IGBT parallel with one another that is used for the switching of controlling resistance loop on the resistance loop.
2. wind-force generating converter brake unit according to claim 1; It is characterized in that: the drive system of said IGBT includes a dsp controller that can generate the IGBT drive signal; Dsp controller is connected with drive circuit with optical fiber through photoelectric conversion module, and drive circuit is controlled two IGBT respectively through two gate pole circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120487722 CN202406013U (en) | 2011-11-30 | 2011-11-30 | Braking unit of wind power generation converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120487722 CN202406013U (en) | 2011-11-30 | 2011-11-30 | Braking unit of wind power generation converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202406013U true CN202406013U (en) | 2012-08-29 |
Family
ID=46703629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120487722 Expired - Fee Related CN202406013U (en) | 2011-11-30 | 2011-11-30 | Braking unit of wind power generation converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202406013U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103818263A (en) * | 2013-12-17 | 2014-05-28 | 航天重型工程装备有限公司 | Brake control system and method |
-
2011
- 2011-11-30 CN CN 201120487722 patent/CN202406013U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103818263A (en) * | 2013-12-17 | 2014-05-28 | 航天重型工程装备有限公司 | Brake control system and method |
| CN103818263B (en) * | 2013-12-17 | 2016-01-13 | 航天重型工程装备有限公司 | A kind of braking control system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20151130 |
|
| EXPY | Termination of patent right or utility model |